a=3.14(4r)2

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Solution for a=3.14(4r)2 equation: 


Simplifying
a = 3.14(4r) * 2

Remove parenthesis around (4r)
a = 3.14 * 4r * 2

Reorder the terms for easier multiplication:
a = 3.14 * 4 * 2r

Multiply 3.14 * 4
a = 12.56 * 2r

Multiply 12.56 * 2
a = 25.12r

Solving
a = 25.12r

Solving for variable 'a'.

Move all terms containing a to the left, all other terms to the right.

Simplifying
a = 25.12r

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